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==Key Stage 4==
===Meaning===
[[Sulphate]] is a [[Negative Ion|negative ion]] with a relative [[Electrical Charge|charge]] of -2 and a [[Chemical Formula|chemical formula]] of SO<sub>4</sub><sup>-2</sup>which combine with [[Positive Ion|positive ions]] to form [[salt]]s.
===About Sulphate===
: [[Sulphate]] has gained two [[electron]]s to have a relative [[Electrical Charge|charge]] of -2.
: [[Sulphate]] forms [[Ionic Bond|ionic bond]]s with [[Positive Ion|positive ions]].
: [[Sulphate]]s containing a [[PhosphateSulphate]] are [[Ionic Compound|ionic compounds]]. ===References=======OCR==== :[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Sulphate ions (test for), page 59, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR '']